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LHCf Papers

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2020-03-06
04:32
Measurement of energy flow, cross section and average inelasticity of forward neutrons generated in $\mathrm{\sqrt{s} = 13 TeV}$ proton-proton collisions with the LHCf Arm2 detector / LHCf Collaboration
In this paper, we report the measurement of the energy flow, the cross section and the average inelasticity of forward neutrons (+ antineutrons) produced in $\sqrt{s} = 13$ TeV proton-proton collisions. These quantities are obtained from the inclusive differential production cross section, measured using the LHCf Arm2 detector at the CERN Large Hadron Collider. [...]
arXiv:2003.02192; CERN-EP-2020-029.- 2020-07-02 - 22 p. - Published in : JHEP 2007 (2020) 016 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF;

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2018-08-28
10:49
Measurement of inclusive forward neutron production cross section in proton-proton collisions at $\sqrt{s} = 13$~TeV with the LHCf Arm2 detector / LHCf Collaboration
In this paper, we report the measurement relative to the production of forward neutrons in proton-proton collisions at $\mathrm{\sqrt{s} = 13~TeV}$ obtained using the LHCf Arm2 detector at the Large Hadron Collider. The results for the inclusive differential production cross section are presented as a function of energy in three different pseudorapidity regions: $\eta > 10.76$, $8.99 < \eta < 9.22$ and $8.81 < \eta < 8.99$. [...]
arXiv:1808.09877; CERN-EP-2018-239.- Geneva : CERN, 2018-11-12 - 27 p. - Published in : JHEP 11 (2018) 073 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Draft (restricted): PDF; Fulltext: Arm2_neutrons_13TeV_fin - PDF; CERN-EP-2018-239 - PDF; 1808.09877 - PDF; External link: Rivet analyses reference

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2017-03-16
15:39
Measurement of forward photon production cross-section in proton-proton collisions at $\sqrt{s}$ = 13 TeV with the LHCf detector / LHCf Collaboration
In this paper, we report the production cross-section of forward photons in the pseudorapidity regions of $\eta\,>\,10.94$ and $8.99\,>\,\eta\,>\,8.81$, measured by the LHCf experiment with proton--proton collisions at $\sqrt{s}$ = 13 TeV. The results from the analysis of 0.191 $\mathrm{nb^{-1}}$ of data obtained in June 2015 are compared to the predictions of several hadronic interaction models that are used in air-shower simulations for ultra-high-energy cosmic rays. [...]
arXiv:1703.07678; CERN-EP-2017-051; CERN-EP-DRAFT-LHCf-2017-001.- Geneva : CERN, 2018-05-10 - 7 p. - Published in : Phys. Lett. B 780 (2018) 233-239 Article from SCOAP3: PDF; Draft (restricted): PDF; Fulltext: CERN-EP-2017-051 - PDF; arXiv:1703.07678 - PDF; revised version - PDF; External link: Rivet analyses reference

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2015-08-03
07:39
Measurements of longitudinal and transverse momentum distributions for neutral pions in the forward-rapidity region with the LHCf detector / LHCf Collaboration
The transverse and longitudinal momentum distributions for inclusive neutral pions in the very forward rapidity region have been measured with the Large Hadron Collider forward detector in proton-proton collisions at $\sqrt{s}=$ 2.76 and 7 TeV and in proton-lead collisions at nucleon-nucleon center-of-mass energies of $\sqrt{s_\text{NN}}=$ 5.02 TeV at the LHC. Such momentum distributions in proton-proton collisions are compatible with the hypotheses of limiting fragmentation and Feynman scaling. [...]
arXiv:1507.08764; CERN-PH-EP-2015-201; CERN-PH-EP-2015-201.- Geneva : CERN, 2016-08-22 - 38 p. - Published in : Phys. Rev. D 94 (2016) 032007 APS: PDF; Fulltext: 10.1103_PhysRevD.94.032007 - PDF; arXiv:1507.08764 - PDF; External link: Rivet analyses reference

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2015-03-13
07:51
Measurement of very forward neutron energy spectra for 7 TeV proton--proton collisions at the Large Hadron Collider / LHCf Collaboration
The Large Hadron Collider forward (LHCf) experiment is designed to use the LHC to verify the hadronic-interaction models used in cosmic-ray physics. Forward baryon production is one of the crucial points to understand the development of cosmic-ray showers. [...]
arXiv:1503.03505; CERN-PH-EP-DRAFT-LHCF-2015-001; CERN-PH-EP-2015-056.- Geneva : CERN, 2015-09-19 - 7 p. - Published in : Phys. Lett. B 750 (2015) 360-366 Article from SCOAP3: PDF; Fulltext: PDF; External link: Rivet analyses reference

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2014-03-25
03:44
Transverse momentum distribution and nuclear modification factor of forward neutral pion in proton–lead collisions at $\sqrt{s_{NN}}$= 5.02 TeV / LHCf Collaboration
The transverse momentum ($p_\text{T}$) distribution for inclusive neutral pions in the very forward rapidity region has been measured, with the Large Hadron Collider forward detector (LHCf), in proton--lead collisions at nucleon-nucleon center-of-mass energies of $\sqrt{s_{NN}} = 5.02$TeV at the LHC. The $p_\text{T}$ spectra obtained in the rapidity range $-11.0 < y_\text{lab} < -8.9$ and $0 < p_\text{T} < 0.6$GeV (in the detector reference frame) show a strong suppression of the production of neutral pions after taking into account ultra-peripheral collisions. [...]
CERN-PH-EP-2014-059; arXiv:1403.7845; CERN-PH-EP-2014-059.- Geneva : CERN, 2014-06-23 - 12 p. - Published in : Phys. Rev. C 89 (2014) 065209 APS Open Access article: PDF; Draft (restricted): PDF; Fulltext: PDF; Preprint: PDF; External link: Preprint

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2013-07-22
15:08
LHCf detector performance during the 2009-2010 LHC run / LHCf collaboration
LHCf has successfully completed the operation during the LHC 2009–2010 period and the detectors were removed in July 2010. The event trigger, data analysis and background have been intensively studied in order to derive inclusive single photon and 0 spectra. [...]
CERN-PH-EP-2013-142.- Geneva : CERN, 2013 - 26 p. - Published in : Int. J. Mod. Phys. A 28 (2013) 1330036 Draft (restricted): PDF; Fulltext: PDF; World Scientific Open Access article: PDF;

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2012-05-17
11:01
Measurement of forward neutral pion transverse momentum spectra for $\sqrt{s}$ = 7TeV proton-proton collisions at LHC / LHCf Collaboration
The inclusive production rate of neutral pions in the rapidity range greater than $y=8.9$ has been measured by the Large Hadron Collider forward (LHCf) experiment during LHC $\sqrt{s}=7$\,TeV proton-proton collision operation in early 2010. This paper presents the transverse momentum spectra of the neutral pions. [...]
arXiv:1205.4578; CERN-PH-EP-2012-145.- Geneva : CERN, 2012 - 18 p. - Published in : Phys. Rev. D 86 (2012) 092001 APS Open Access article: PDF; Draft (restricted): PDF; Fulltext: PDF; External link: Rivet analyses reference

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2012-03-27
12:28
Luminosity determination in $\sqrt{s}$ = 7 TeV proton collisions using the LHCf Front Counter at LHC / Taki, K (Nagoya U., Solar-Terrestrial Environ. Lab.) ; Adriani, O (INFN, Florence ; Florence U.) ; Bonechi, L (INFN, Florence) ; Bongi, M (INFN, Florence) ; Castellini, G (INFN, Florence ; Florence U.) ; D'Alessandro, R (INFN, Florence ; Florence U.) ; Fukatsu, K (Nagoya U., Solar-Terrestrial Environ. Lab.) ; Haguenauer, M (Ecole Polytechnique) ; Itow, Y (Nagoya U., Solar-Terrestrial Environ. Lab.) ; Kasahara, K (Waseda U., RISE) et al.
In the Large Hadron Collider forward (LHCf) experiment, the luminosity is determined with the counting rates of detectors called Front Counter. During the LHCf physics operation at √s = 7 TeV in 2010, two series of calibration run in the conversion factors from the counting rate to the luminosity were carried out on 26th of April and 9th of May. [...]
2012 - Published in : JINST 7 (2012) T01003 IOP Open Access article: PDF;

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2012-03-27
10:38
Study of Radiation Hardness of Gd2SiO5 scintillator for Heavy Ion Beam / Kawade, K (Nagoya U., Solar-Terrestrial Environ. Lab.) ; Fukatsu, K (Nagoya U., Solar-Terrestrial Environ. Lab.) ; Itow, Y (Nagoya U., Solar-Terrestrial Environ. Lab.) ; Masuda, K (Nagoya U., Solar-Terrestrial Environ. Lab.) ; Murakami, T (NIRS, Chiba) ; Sako,T (Nagoya U., Solar-Terrestrial Environ. Lab.) ; Suzuki, K (Nagoya U., Solar-Terrestrial Environ. Lab.) ; Suzuki, T (Waseda U., RISE) ; Taki, K (Nagoya U., Solar-Terrestrial Environ. Lab.)
Gd2SiO5 (GSO) scintillator has very excellent radiation resistance, a fast decay time and a large light yield. Because of these features, GSO scintillator is a suitable material for high radiation environment experiments such as those encountered at high energy accelerators. [...]
2011 - Published in : JINST 6 (2011) T09004 IOP Open Access article: PDF;

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